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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2014, Vol. 35 ›› Issue (12): 3403-3414.doi: 10.7527/S1000-6893.2014.0089

• Electronics and Control • Previous Articles     Next Articles

Modulation Recognition Technology of Satellite Communication Signal System

MA Zhaoyu1, HAN Fuli2, XIE Zhidong1, HU Jing1, BIAN Dongming1, ZHANG Gengxin1   

  1. 1. Institute of Communication Engineering, People's Liberation Army University of Science and Technology, Nanjing 210007, China;
    2. Beijing Armed Police Command College, Beijing 100012, China
  • Received:2014-01-24 Revised:2014-05-06 Online:2014-12-25 Published:2014-06-16
  • Supported by:

    National Natural Science Foundation of China (61032004, 91338201); National High-tech Research and Development Program of China (2012AA121605, 2012AA01A503, 2012AA01A510)

Abstract:

A novel method for automatic modulation recognition in satellite communication is presented based on the high-order cumulants and characteristics of the spectrum, after that the simulation of the high-order cumulants and the spectrum lines of kinds of modulation signal in satellite communication are given and analyzed. A set of robust characteristic parameters for automatic modulation recognition is obtained which is from the high-order cumulants, power spectrum, square spectrum and quartic spectrum of the raised cosine shaping signals. And then, the method to automatic identification of the modulation attend is realized by blind estimation of symbol rates and carrier frequencies of signals without any prior knowledge. Most modulation modes of satellite communication are covered in this method and the identification system of satellite communication modulation is formed initially. The simulation results show that the method can overcome the effects of raised cosine shaping and is promising in satellite communications.

Key words: satellite communication, modulation, recognition, high order cumulant, spectrum feature, raised cosine shaping

CLC Number: